Gas burner



July 31; 1928.

1,679,298 5. M. EVANS GAS BURNER Filed awn s, 1927 2 Sheets-Sheet 1 213-1.

INVENTOR.

ME Q/a 720*.

July 31,1928. I 1,679,298 S. M. EVANS GAS BURNER Filed April 5, 1927 2Sheets-Sheet 2 fu l M 1% v I.

INVENTUR v '7 I A A ORNEV Patented July 31, 1928.

UNITED STATES SILAS M. EVANS; 0F SAND SPRINGS, OKLAHOMA.

GAS BURNER.

Application filed April 5,

This invention, relates to certain new and useful improvements in gasburners, and has for its primary object to provide a burner that isdesigned in a manner to cause the proper mixture of air and gas forperfect combustion in an automatic manner without the aid of adjustabledevices and is intended for various uses where gas is used for heat,such as in oil fields, factories, buildings, and also for household useor the like, the ideaembodied in this invention ranging from a heaterfor a relatively small coffee urn to a steam boiler.

A further object of the invention is to provide a burner of the abovetype that is extremely simple in construction and inexpensive tomanufacture, the burner embodying two main parts, one of which partbeing an air mixer and the other part the burner proper, or burner tip.

A still further object of the invention is to provide a burner of theabove type wherein the burner tip is constructed to produce aspreadingflame or splash with the flame spreading over a considerablearea at the burner tip for direct heating of a larger surface.

With the above and other objects in view that will become apparent asthe nature ofthe invention is better understood, the same consists inthe novel form,'combination or arrangement of parts hereinafter morefully described, shown in the accompanying drawings and claimed.

In the accompanying drawings wherein like reference characters indicatecorresponding parts throughout the several views,

Figure 1 is a top plan View ;of a gas burner constructed in accordancewith the present invention;

Figure 2 is a side elevational view, partly in sect-ion of the burnershowing the two main parts of the burner having a screw threadconnection with the burner proper or tip of elbow formation;

Figure 3 is a detailed sectional view taken on line 33 of Figure 2showing the burner tip with the divergent gas deflecting plate;

Figure 4 is a cross-sectional view taken 011 line 44 of Figure 2;

Figure 5 is a fragmentary side elevational view, partly in section of acoffee urn with the improved burner positioned beneath the same;

Figure 6 is a side elevational view, partly 1927. Serial No'. 181,192.

and gas mixer comprises a tubular member or pipe section 3 that isinternally threaded at one end while the opposite end tapers to asmaller diameter and terminates in an interiorly threadedcoupling 4 forattachment to a gas supply pipe 5 as shown in Figures 5 and 6. Aplurality of circumferentially spaced air inlet/openings 5 of the formshown in Figures 1 and 2 are provided in the pipe section 3 adjacent thecoupling end i. for the aid of combustion.

The gas nozzle and its mounting is shown more clearly in Figure 2 andbeing associated with the air and gas mixing part of theburner,con'iprises anexternally threaded tubular fitting 6 mounted inthe inner end of the coupling end 1- of the burner with the inner closedend 7 thereof provided with a central internally threaded opening. Arelatively long nozzle 8 has one end threaded into a threaded opening inthe closed end 7 ofthe tubularfitting 6 and is of a length to positionthe outlet end thereof substantially in line with the adjacent end ofthe pipe section 3.

The burner proper or tip comprises a pipe section of elbow formationhaving a straight leg 9 externally threaded at its outer end forreception in the internally threaded end of the pipe section 3 while theangularly bent end 10 of the elbow forms the burner tip. The open end 11of the burner tip 10 has the opposite sides thereof cut away as at 1:2to form recessed or notched port-ions defining lateral openings, thisconstruction being clearly shown in Figures 2 and A pair of divergentplates 13 are anchored at their ends to opposite side walls of theburner tip and as illustrated in Figures 2 and 3 extend inwardly andoutwardly of the end 11 of the burner tip, the plates being disposed tooverlie the side openings 19. with the outer ends thereof directed abovesaid openings to cause a lateral projection of a flame jet, while theinner ends of the divergent plates 13 are spaced from each other as atlet a so to provide for an axial flame jet.

The use of a burner of the type disclosed herein is capable of manyapplications and as shown in Figure 5, the burner is associated with acoffee urn A, while in Figure (l the burner is associated with a steamboiler B. The mixing of air and gas for perfect combustion isaccomplished in a burner of this type without the aid of control devicesfor varying the area of the air inlet openings and the burner worksperfectly under consumption of low or high pressure and othervariations. The flame issues from the burner tip in the matterschematically illustrated in Figure 7 and insures a wide spread of flameover an increased area as illustrated.

While there is herein shown and described the preferred embodiment ofthe present invention, it is nevertheless to be understood that minorchanges may be made therein without departing from the spirit and scopeof the invention as claimed.

lVhat I claim as new is 1. In a burner of the character described, aburner body comprising a gas and air mixer section and a burner tipsection, said mixer section having ail-inlet openings in its side wall,a gas nozzle inclosed therein, the burner tip section being in the formof an elbow, a pair of outwardly divergent plates at the outlet end ofthe burner tip the wall of the burner tip at its outer end being cutaway and underlying the divergent plates to cause lateral projections ofthe flame jet, and the inner adjacent ends of the plates being spaced topermit an axial flame projeetion.

2. In a burner of the character described, a burner body comprising agas and air mixer section and a burner tip section, said mixer sectionhaving air inlet openings in its side wall, a gas nozzle inclosedtherein, the burner tip section being in the form of an elbow, a pair ofoutwardly divergent plates at the outlet end of the burner tip, and saidplates terminating outwardly of the outer end of the burned tip, thewall of the burner tip at its outer end being cut away and underlyingthe divergent plates to cause lateral projection of the frame jet, andthe inner adjacent ends of the plates being spaced to permit an axialflame projection.

23. A gas burner comprising a gas and air mixer section having an innerend portion tapering smaller in an inward direction and having air inletopenings therein, a gas supply nozzle mounted at its inner end in theinner end of the tapered inner end portion of the gas and air mixersection and projecting axially of the latter forwardly past said airinlet openings, said gas and air mixer section being devoid of means forrestricting or varying the inlet of air through said air inlet openings,a burner tip section on the outer end of said gas and air mixer section,and a pair of outwardly and laterally divergent deflector plates securedin the outer end of said burner tip section.

a. A gas burner comprising a body composed of a gas and air mixersection and a burner tip section having an outlet end, and a pair ofoutwardly and laterally divergent deflector plates secured in the outletend of the burner tip section and spaced from the sides of the latter,the deflector plates being spaced apart to permit a central flameprojection. In testimony whereof I afiix my signature. 1 Y i SILAS M.EVANS.

